Searching for a lost Jowett!

From Chris Taylor

I used to own a two cylinder Jowett 7HP saloon reg. no JR 400. I gave it away to an enthusiast in Middlesbrough but I kept the Klaxon and the book of Jowett Javelin, Jupiter, Bradford and Earlier Cars by Staton Abbey (published by Pitmans circa 1937/1959)
Do any of your club members want these ? How can I find out if my car JR 400 still extant?